# Number Theory Forum

Number Theory Help Forum

1. ### Writing p = x^2 + y^2

• Replies: 8
• Views: 623
Jun 28th 2010, 11:35 AM
2. ### [SOLVED] if a^2 \equiv 1, then a \equiv \pm 1 (mod p)

• Replies: 5
• Views: 525
Jun 27th 2010, 03:43 PM
3. ### Integral coefficients

• Replies: 3
• Views: 1,077
Jun 27th 2010, 03:36 PM
4. ### Divisibility of [(p^2) - 1] by 6,12,24 etc. where p is prime number greater than 5

• Replies: 10
• Views: 862
Jun 27th 2010, 12:45 PM
5. ### [SOLVED] T or F: 9^{100}-1 is divisible by 10

• Replies: 5
• Views: 454
Jun 27th 2010, 05:26 AM
6. ### [SOLVED] 10^{2001}+1 is divisible by 11

• Replies: 4
• Views: 473
Jun 27th 2010, 12:16 AM
7. ### [SOLVED] if today is Tuesday, what day will it be in 129 days?

• Replies: 2
• Views: 726
Jun 26th 2010, 08:54 PM
8. ### [SOLVED] Congruence of factorials when the mod isn't 10 or 15

• Replies: 4
• Views: 738
Jun 26th 2010, 08:48 PM
9. ### [SOLVED] 1!+2!+...+1000! \equiv x (mod 10)

• Replies: 1
• Views: 519
Jun 26th 2010, 07:42 PM
10. ### [SOLVED] Modulo and congruence

• Replies: 3
• Views: 613
Jun 26th 2010, 05:10 PM
11. ### [SOLVED] More Congruence

• Replies: 9
• Views: 531
Jun 26th 2010, 01:48 PM
12. ### [SOLVED] Congruence

• Replies: 8
• Views: 467
Jun 26th 2010, 12:01 PM
13. ### Group order of Z_p + Z_p*(sqrt(n))

• Replies: 10
• Views: 853
Jun 26th 2010, 12:00 AM
14. ### [SOLVED] Linear Diophantine Equations

• Replies: 4
• Views: 743
Jun 25th 2010, 06:49 PM
15. ### Is the Riemann Hypothesis hard to understand?

• Replies: 7
• Views: 1,419
Jun 25th 2010, 12:58 PM
16. ### The digits of e in pi

• Replies: 8
• Views: 868
Jun 24th 2010, 12:58 PM
17. ### [SOLVED] Find a and b where a, b \in\mathbb{Z}^+

• Replies: 15
• Views: 1,084
Jun 23rd 2010, 03:40 PM
18. ### What are the following types of numbers called?

• Replies: 6
• Views: 636
Jun 22nd 2010, 06:33 PM
19. ### Variation of Wilson's Theorem

• Replies: 2
• Views: 733
Jun 22nd 2010, 12:04 PM
20. ### Lucas-Lehmer test (proof)

• Replies: 3
• Views: 977
Jun 21st 2010, 05:26 PM
21. ### [SOLVED] if p|a^2, then p|a. True

• Replies: 15
• Views: 1,190
Jun 21st 2010, 09:22 AM
22. ### Couldn't solve this one

• Replies: 4
• Views: 657
Jun 21st 2010, 06:33 AM
23. ### [SOLVED] Two consecutive Z are relatively prime iff. their LCM=GCD.

• Replies: 9
• Views: 1,210
Jun 20th 2010, 05:05 PM
24. ### [SOLVED] Two consecutive numbers are relatively prime

• Replies: 5
• Views: 5,175
Jun 20th 2010, 02:50 PM
25. ### infinite sum

• Replies: 1
• Views: 449
Jun 20th 2010, 02:31 AM
26. ### [SOLVED] n!

• Replies: 2
• Views: 406
Jun 19th 2010, 08:07 PM
27. ### A Simple Complex Number Equation

• Replies: 1
• Views: 399
Jun 19th 2010, 04:01 PM
28. ### Canonical Decomp 2

• Replies: 3
• Views: 848
Jun 19th 2010, 10:56 AM
29. ### [SOLVED] Canonical Decomp

• Replies: 5
• Views: 1,199
Jun 19th 2010, 12:01 AM

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